An excellent and interesting short crossover, but it will make a lot more sense if you have seen Assignment Three of Sapphire & Steel. (So also has some mild spoilers for that story.) But I like the meeting and the way it works, because the two universes aren’t as easy to mesh as they seem on appearances.

Perfectly in keeping with both shows. This is funny and charming and a light romp across the Dales. It really wouldn’t seem surprising if the Doctor had actually popped up like this in Summer Wine, somehow.

This is short and funny, and note-perfect, which for a Hitchhiker cross is surely recommendation enough. In which the invasion of Earth is foiled in typical random manner, and there are lots of lovely, amusing throwaway snippets, and did I say it was voice-perfect?

Another fun cross, with particular credit going to the treatment of Arthur’s search for tea (and this incarnation’s ability to stash cups in his pocket) and Arthur giving the Doctor and K9 the answer to the universe.

A bit of nonsense I should have been ashamed of, but am still posting here: Blake’s blowing up the wrong target, the Doctor’s on the wrong planet, but the important thing is that Romana, Jenna and Servalan are having fun in a futuristic fashion boutique.

A crossover from Primsong is a rare and beautiful thing and this is a joy from start to finish. No aliens, or end of the world threats, but a lot of fun and some nice juxtaposition of the two worlds that collide here. I think I may, once have read one of the Ramona books, but I can still recommend this engaging fic wholeheartedly.